PHP Class diagram generator shell script

class_diagram_generator.sh

#!/bin/bash

if [[ $# -ne 1 ]]; then
	echo "No file specified"
	exit
fi

FILE=$1

#public properties
egrep 'public \$[a-zA-Z_]' $FILE | tr -d '$;=[]' | awk '{print "+ " $2}'

echo

#private properties
egrep 'private \$[a-zA-Z_]' $FILE | tr -d '$;=[]' | awk '{print "- " $2}'

echo "-------------------------------------------------------------"

#getters
egrep 'public function get[A-Za-z]' $FILE | tr -d ':' | awk '{print "+ " $3}'

echo

#setters
egrep 'public function set[A-Za-z]' $FILE | tr -d '$:=[]?' | awk '{$1=""; $2=""; $NF=""; gsub(/^[ \t]+/, "", $0); print "+ " $0}' | sed 's/[[:space:]])/)/g'

echo

#public functions
egrep 'public function [^set|get][A-Za-z]' $FILE | tr -d '$:=[]?' | awk '{$1=""; $2=""; $NF=""; gsub(/^[ \t]+/, "", $0); print "+ " $0}' | sed 's/[[:space:]])/)/g'

echo

#private functions
egrep 'private function [^set|get][A-Za-z]' $FILE | tr -d '$:=[]?' | awk '{$1=""; $2=""; $NF=""; gsub(/^[ \t]+/, "", $0); print "+ " $0}' | sed 's/[[:space:]])/)/g'

echo